Ping site and return result in PHP

php ping
Tomer Lichtash picture Tomer Lichtash · Aug 6, 2009 · Viewed 126.8k times · Source

I'd like to create a small IF procedure that will check if Twitter is available (unlike now, for example), and will return true or false.

Help :)

Answer

Tyler Carter picture Tyler Carter · Aug 6, 2009 
function urlExists($url=NULL)  
{  
    if($url == NULL) return false;  
    $ch = curl_init($url);  
    curl_setopt($ch, CURLOPT_TIMEOUT, 5);  
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);  
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  
    $data = curl_exec($ch);  
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);  
    curl_close($ch);  
    if($httpcode>=200 && $httpcode<300){  
        return true;  
    } else {  
        return false;  
    }  
}

This was grabbed from this post on how to check if a URL exists. Because Twitter should provide an error message above 300 when it is in maintenance, or a 404, this should work perfectly.

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